html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
}

body {
    height: 100vh;
    background-image: url(/网站资源/主网站素材/插画/东煌合照.png);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.top {
    height: 100px;
    background-color: rgba(255, 255, 255, 0.3);
    text-align: center;
    line-height: 100px;
}

.top>a {
    letter-spacing: 5px;
    color: rgba(0, 0, 0, 0.72);
    font-size: 28px;
    font-weight: 600;
    font-variant: small-caps;
}

.shell {
    max-width: 80%;
    margin: 0 auto;
    padding: 30px 20px;
}

.box {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
}

.left {
    width: 400px;
    height: 100%;
    padding: 100px;
}

.joinpart .left .square {
    width: 200px;
    height: 200px;
    border: 5px solid rgb(183, 207, 226);
    margin: auto;
    border-radius: 30%;
    animation: a1 3s infinite linear;
}

.left .square::before {
    content: "";
    width: 200px;
    height: 200px;
    transform: rotate(30deg);
    border: 5px solid rgb(183, 207, 226);
    border-radius: 40%;
    position: absolute;
    animation: a2 25s infinite linear;
}

.left .square::after {
    content: "";
    width: 200px;
    height: 200px;
    transform: rotate(60deg);
    border: 5px solid rgb(183, 207, 226);
    border-radius: 30%;
    position: absolute;
    animation: a2 60s infinite linear;
}

.left .square:hover {
    animation: a1 15s infinite linear;
}

.left .square:hover::before {
    animation: a2 80s infinite linear;
}

.left .square:hover::after {
    animation: a1 50s infinite linear;
}

.left .tit {
    width: 200px;
    height: 200px;
    font-size: 2em;
    color: rgb(183, 207, 226);
    text-align: center;
    margin-top: 80px;
}

.left .tit h1 {
    font-size: 18px;
    color: aqua;
    margin-bottom: 10px;
}

.left .tit h2 {
    font-size: 16px;
    color: #fff;
}

.right {
    width: 800px;
    height: 100%;
    margin-right: 200px;
    padding-left: 40px;
}

.right h1 {
    color: rgba(0, 176, 240, 0.592);
    margin-bottom: 10px;
}

.right h2 {
    color: rgba(0, 255, 242, 0.8);
    margin-bottom: 10px;
}

.right p {
    color: #fff;
    font-family: 'kaiti';
    line-height: 20px;
    margin-bottom: 40px;
}

.right .nav {
    width: 100%;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.7);
}

.contact {
    display: flex;
    justify-content: space-around;
}

.right .nav .contact .button {
    background-color: rgba(255, 255, 255, 0.7);
    width: 160px;
    height: 100px;
    text-align: center;
    line-height: 50px;
    transition: .3s;
    z-index: 1;
}

.button ul li {
    width: 0;
    height: 0;
    transition: .2s;
    opacity: 0;
    transform: translateY(-6px);
    background-color: rgba(255, 255, 255, 0.7);
}

.button:hover li {
    width: 150px;
    height: 20px;
    text-align: center;
    font-size: 12px;
    line-height: 20px;
    color: rgba(0, 0, 0, 0.558);
    opacity: 1;
    transform: translate(-10px, 0);
}

.foot {
    width: 100%;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.3);
    /* line-height: 80px; */
    text-align: center;
    z-index: 2;
    position: fixed;
    bottom: 50px;
}

.foot h1 {
    margin-top: 10px;
    font-size: 24px;
    color: rgb(16, 112, 196);
}

.foot p {
    margin-top: 10px;
    color: #fff;
    font-size: 18px;
}

@keyframes a1 {
    to {
        transform: rotate(360deg);
    }
}

@keyframes a2 {
    to {
        transform: rotate(-10800deg);
    }
}

@keyframes loadbac {
    0% {
        opacity: 0;
        margin-top: 100px;
    }

    100% {
        opacity: 1;
        margin-top: 50px;
    }
}